i've grown a whole centimeter since i was 20. not too sure when the second last time i measured my height was, but definitely after 20.
this without any hormone treatment. and i never slouch when measuring my height.
it's funny to be told when nearing 30, that i'm taller than i thought.
maybe it's just a matter of how straight my muscles can stretch me though, who knows.
but shouldn't i be shorter if that was the case, it's not like i have more muscle now than ten years ago, or even just five.